Coherent quasiparticle transport in grain boundary junctions employing high-T-c superconductors
Paper i proceeding, 2006

Magneto-fluctuations of the normal resistance R-N have been reproducibly observed in YBa2Cu3O7-delta biepitaxial grain boundary junctions at low temperatures. We attribute them to mesoscopic transport in narrow channels across the grain boundary line, occurring even in the presence of large voltage drops. The Thouless energy appears to be the relevant energy scale. Possible implications on the understanding of coherent transport of quasiparticles in high critical temperature superconductors (HTS) and of the dissipation mechanisms are discussed. (c) 2007 Elsevier Ltd. All rights reserved.

high T-c superconductors

mesoscopic transport

Författare

F. Tafuri

Università degli Studi della Campania Luigi Vanvitelli

Universita degli Studi di Napoli Federico II

A. Tagliacozzo

Universita degli Studi di Napoli Federico II

D. Born

Universita degli Studi di Napoli Federico II

D. Stornaiuolo

Universita degli Studi di Napoli Federico II

E. Gambale

Università degli Studi della Campania Luigi Vanvitelli

D. Dalena

Università degli Studi della Campania Luigi Vanvitelli

P. Lucignano

Universita degli Studi di Napoli Federico II

B. Jouault

Université de Montpellier

Floriana Lombardi

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

A. Barone

Università degli Studi della Campania Luigi Vanvitelli

B. L. Altshuler

Columbia University in the City of New York

NEC Laboratories America, Inc.

Microelectronics

0026-2692 (ISSN)

Vol. 39 1066-1069

Ämneskategorier

Fysik

DOI

10.1016/j.mejo.2007.07.094